Add more unit-test of Ordinal for confirmation
diff --git a/ordinals_test.go b/ordinals_test.go
index 51d85ee..61dca16 100644
--- a/ordinals_test.go
+++ b/ordinals_test.go
@@ -15,6 +15,9 @@
 		{"11", Ordinal(11), "11th"},
 		{"12", Ordinal(12), "12th"},
 		{"13", Ordinal(13), "13th"},
+		{"21", Ordinal(21), "21st"},
+		{"32", Ordinal(32), "32nd"},
+		{"43", Ordinal(43), "43rd"},
 		{"101", Ordinal(101), "101st"},
 		{"102", Ordinal(102), "102nd"},
 		{"103", Ordinal(103), "103rd"},